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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd9366278b4b6d4e3a183f69dd5becef2c3e4b90a372db77129c3a73054744d00' 
  AND token = 'GJCPh9sx3lrbpUHu7iN9MWGQmQCSxOX2LFQyswWA7l8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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