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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'daa8cc6769085781d0c203d41fa77d709e2fe8358735d9cd4a0b7b0f9bbc008e' 
  AND token = 'kdfJ1q9Skyk/zaO3Fm/96ecUVUm7pZsgzUoVGqqz7gk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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