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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd80aa2b0604eae01aee166d61c3cb5b9cff2f9fc6dc2ce1fef8cdee54e8ef615' 
  AND token = 'o9ioW8M/EZT+P624tJC4CQr/RYSB1LiNETCDSjLrIBQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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