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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52c3c59159cb40af30cdf28510ae4432f1464981917576e7465c3307f030ad70' 
  AND token = 'yrm4kA1qWkszQXP0dYKJacVIYME3abd5sTena3Lxj0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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