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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aaf466d6bdddbbe8be5e448221cc070289d0c76d3f003e43ced2c4afeb89c02b' 
  AND token = 'xKHwJEpS6AdBFTBWSWvwFKH4tV5B1WKG1QvZaU0atCI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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