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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a2edd29959fe6238cad58f6b9ce2eb2e7ac6fbdbc0a72448d4e2ccd1ed77611' 
  AND token = 'qFyetKccJ9R+fyjMiGUc+hr/wF10hoMc5C3adSrpJ+0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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