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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32c9d47b6ed2bbd80dd22977cd8149233c568777ae68f13e23b2b64e2d005cdd' 
  AND token = 'u5RlEfyCvLyekqRoF8bGJR3xUqHO1Qrvb40rM705s8c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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