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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5e3d00675d047a1b9270f088a6932127c2d9e1663172d0a6cd0b3884b89f3bb' 
  AND token = 'ornnZ9x3JGp9hnHX1VUZKhp7wxg1Y93ygo3uwnLRGEg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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