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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '73860d7fa7d9d0a436812b4fbf352628c7fcd7bb0ff3670c1903e1982b1b25f0' 
  AND token = 'fTTdVzTJw2PfpyzBYM4CdkHEPbN8v02V3b4YQ84CV0E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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