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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '606156b22a3823205c377e6c38a2df26066d7dcdf692c6c00e620e2a0c41a0e9' 
  AND token = 'YwbyGOtWACpcQM6f5px/om3wIm9EFyV55s/H3CbC3PU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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