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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c72ddf16c1126c2efd0c8b4d7eb39d17b06757380d1ad586b24bf9caa8a65ae' 
  AND token = 'xknM7sqhxfmIH0aBEbQ4Q1c2LDc+Md+a/RgUQi+w2Hw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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