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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8f8985f2b8957cc0eaaf8efdd7994ef997e153c48c70b1ff58073e54e8c66b59' 
  AND token = 'wp/5Y7IVXW7tYG1fwN4w0dkHEJG/iKbGFs+JAdGT/Ek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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