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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba0083fe1cbd5fcf7c3b0d9fa4b4b84e78e25def1100f2694be4ab876cfc67a8' 
  AND token = '9INob27fLPGvs8Ykzp6uSicclam8vRQsmtMub12nz4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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