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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f825bebb8569198db8eb15b3a994107f1ed190e6be15a7ce1e35e81dd87132e' 
  AND token = 'A1Qngs+OLBRHhJqeE+9aSd454/H/0wSJFw5RR2gPDik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}