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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54653138e3b6b6f8245546fc906cedf7eabdaa902ddb5142538a53a4ef346225' 
  AND token = 'E5EUVPgh13w8NKlWeO7ic5KMFEfJ0MCYbI5lhOK8i/g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00150

JSON explain

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