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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '369ceb60072b23eede9c153829e9b1b4661d9cdd04b68c3393f71df59bc69909' 
  AND token = 'IWVYCVUO11rEnrkhlm3yq2awZr1Lz7sPhAU5gw5vSe0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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