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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e160556e9261c87d537ddaa739872c976656dec244471b5c97fd40fb9812de9e' 
  AND token = 'edKPAmrqIq9WOzYDkVv/S3Rg2PSCn1G/iOXivbLU9NA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00098

JSON explain

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