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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '329f0a22e19eefa9fae87e964c2bed66b236b34df3b14b465fb3e5e8eab8ac66' 
  AND token = 'tnc4+4PS2GLP6US7rdMipFYbuDsYOFLWC/t+saXQCaE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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