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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b0632f1113c5ef04034e60e84365b1cbb5cdc11ee6f2d8ec3cbaa5c0563ff93c' 
  AND token = 'fIL7Cqa2RzR2INqN7AKyQ6ujWA6nKbOelJ8W8j/MaGk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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